Valve.



C, H. SIMMONS.

VALVE.

APPLICATION FILED JUNE14,1909.

1,020,374, Patented Mar. 12, 1912.

Fig 2.

To all whom it may concern:

ticularly to a valve '1 is an elevation and Fig.

non of a valve toward and from struction, comprising,

"ille'iilllilti dill allied FATENT tlft llltlhli CHA'EEJFQS: H. SIMMONS;{3F CHICAGO, I. LINOIS, AElSIGNOR TO THE 0. H. S. COMPANY,

OF YOHKVILLE, ILLI'N 018,

A CURPORATION,

VALVE.

Be it known that I, CHARLES H. SIMMONS,

a citizen of the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented a new and useful Improvement.in Valves, of which the following is a specification.

This invention relates to that class of valves for use on steamradiators and for other purposes in which the valve stem has a rotarymovement only and in which leads age of the steam or other 'lluid aroundthe valve stem is prevented without the use ot a separate packing andwhich are usually designated as packlcss valves.

The invention has rct'crcncc more parin which the stem is packed bymeans of an outwardly tapering surface formed on the stem and pressedagainst a correspondingly shaped socket or cavity in the dome-or bonnetof the valve casing. 1 p

The object of this invention is to improve valves of this generalcharacter with a view of maintaining a. tightjoint around the valve stemby a simple, ctlicient and durable construction which while preventingleakago permits the valve stem to turn freely or with little friction.

In the accompanying drawings: Figure 2 a vertical secembodying thisinvention. Fig. 3 is a horizontal section, on an enlarged scale, on line33, Fig. 2. Fig. 4: is a fragmentary sectional elevation showing theattachment of the valve disk to the screwthreaded carrier by which thedisk is moved the valve seat.

Like reference characters refer to like parts in the several figures.

represents the body of the valve casingprovided with an annular valveseat 11 and on opposite sides of said seat with screw-threaded tubularportions 12, 13, for connection with-pipes or other passages for thesteam or other fluid.

14 represents the rigid valve disk provided with an annular facing 15 ofrubber or other suitablematerial adapted to seat itself tightly upon thevalve seat 11.

16 represents the valvecarrier which is movable toward and from thevalve seat and to which the valve disk is attached by a swivelingconnection of any suitable conpreferably, a short.

Specification of Letters Application filed June 1 1908:

P t n Patcntcd Mar. 12, 1912.

Serial No. 501,970.

stem 17 which extends upwardly from the disk through an opening in thebottom 18 of the carrier in which the stem is rotatably held by a washer19 bearing upon the boltom and secured. to the reduced upper end or thestem 17 by the headed upper end of this stem. Access can be had to theupper end of the stem 17 from the open upper end of the carrier. Thisswiveling connection of the valve disk with the carrier is simple,durable and permanent. The annular facing 15 is preferably secured tothe valve disk by means of a stem 20 extending down wardly from the diskand a screw nut 21. ap-

plied to the threaded lower cud of this stem.

2:2 represents the dome or bonnet of the valve casing in which thecarrier 10 and the valve stem 23 are arranged and which is secured tothe body 10 by a screw joint 24. The lower part of this bonnet isprovided with an internal screw-thread 25 in which the external thread26 of the carrier works. The shank 27 forming the lower or inner portionoi the valve stem is angular, pret crably square, and extends into thecavity of the carrier, which latter is provided in its upper portionwith an angular socket or opening 28 in which the shank 27 fits, so thata rotary movement of the valve stem causes a rotary movement of thecarrier which in turn causes the carrier to move to ,or from the valveseat.

The middle portion of the bonnet 22 is provided with an upwardly oroutwardly tapering cavity or sent .29 for the reception of acorrespondingly tapering collar or packing surface 30 "formed on thevalve stem. The tapering surfaces oi the seat and collar are ground uponeach other so as to form a tight joint which prevents leakage of thefluid along the stem. Thev stem is pressed with this tapering packingsurface against the tapering seat by a spiral spring '31 which restsupon a bushing, washer or annular support 32 rcmovably secured in thebonnet 22 by a scrcw-thrczul or other suitable means. This washer orbushing has preferably a cylindrical bore and forms a guide for theadjacent cylindrical portion 33 of the stem. 'Ihe'top or outer part 3 Lof the bonnet forms a cylindrical guide for the upper part of the valvestem which may be reduced between its ends to reduce the extent of: thecontact-surfaces represents the hand wheel or other device of anysuitable construction seemed to the exposed end of the valve stem forn'ianipulating the same.

The bonnet is an integral structin'e containing the internal thread forthe carrier 16, the internal thread for the removable spring support 32,the tapering seat 29 for 5 the tapering packing surface on the valve lstem, and the cfiliudrical guide 34 for the outer portion of the latter.These several interior portions oi. the bonnet can therefore all bereadily termed exactly in line with each other or concentric with thetrue axial line oil the stem, \vherebya close fit ot the parts issecured in a very simple and inexpensive manner and binding avoided,while the stem is enabled to turn freely. The stem is inserted. into thebonnet from below, the bonnet itself containing no joint which mightrequire to be packed or cause leakage. The spring is inserted also frombelow and the spring support is inserted from below and secured in thebonnetthereby connecting the stem with the latter. The pressure exertedby the spring against the stem can be regulated by adjusting the springsupport. When the valve stem, the spring and the spring support havebeen attached to or secured in the bonnet, these parts form a unitarystructure which can be handled and shipped complete and without dangerof having the adjustment or relative position of the parts disarrangedby unskilful or inexperienced persons in using the structure or applyingthe same to the valve casing. If desired, the spring support can befurther secured in position by jamming or punching the attaching screwthreads after the support has been screwed into the bonnet and properlyadjusted. An

easy and at the same time steam and air tight working is by this meansattained in this improved valve in a very simple, inexpensive anddurable manner, thereby preventing the escape of steam or water when thevalve casing is under pressure, or the entrance of air when the same isexhausted.

The sides of the angular socket or"opening 28 in the carrier arepreferably each composed of two faces or portions 37, 38, Fig. 3, whichstand at an obtuse angle to each other, presenting the vertex inwardlyor converging inwardly. This enables each side of the angular shank 27ot' the valve stem to take a flat bearing against one I face of thecontiguous side of the socket or bearing only, as play or and theopening, instead of the shank against the socket with its edges would bethe case when considerable clearance exists between the shank side ofthe socket.

I claim as my invention:

1. The combination with a valve casing, of a bonnet having the innerportion of its cavity enlarged for the insertion of a spring and springsupport from the inner end of the bonnet and provided with an internalserewthread for engagement with an externally threaded valve carrier,'said cavity being further provided outwardly of said carrier threadwith an internal screwthread of less diameter for receiving a springsupport, and outwardly of the last mentioned screwthread with anoutwardly tapering inc-king seat, of an externally threaded springsupport adapted to beinserted through the inner end of said cavity andsecured in said. supporting thread, a valve stem provided with atapering portion fitting rotatably in said seat, and a spring resting onsaid support and pressing said stem outwardly, substantially as setforth.

2. The combination with a valve casing,

of a bonnet having the inner portion of its cavity adapted for theinsertion of a spring and spring support from the inner end of thebonnetand having an internal screwthread for the reception of suchspring support and an outwardly tapering packing seat arranged outwardlyof said screwthreaded portion, a valve stem provided with a taperingportion fitting retatably in said seat, an annular spring support havingan external screwthread engaging the internal thread of the bonnet, saidthreads be ing exposed and accessible at of the bonnet, and a springresting on said support and pressing said stem outwardly, substantiallyas set forth.

8. In a valve, the combination with a valve stem having anangular-"shank, of a valve carrier having an angular socket, the sidesof which are formed each by two inwardly converging faces for engagementwith the sides of the shank, substantially as set forth.

Witness my hand in the presence of two subscribing witnesses. CHARLES H.SIMMONS. l Witnesses:

JOHN G. Ma'rnnws, 'W. F. KLEMP.

the inner end

